Permissions and such are fine, I can run the update manually without any issues.
The error seems to be in the file handling via wp-cron:
PHP Warning: fopen(/home/tcbarrett/sites/www.tcbarrett.com/wp-cron.php/sitemap.xml): failed to open stream: No such file or directory in /home/tcbarrett/sites/www.tcbarrett.com/wp-content/plugins/google-sitemap-generator/sitemap-core.php on line 1623
PHP Warning: gzopen(/home/tcbarrett/sites/www.tcbarrett.com/wp-cron.php/sitemap.xml.gz): failed to open stream: No such file or directory in /home/tcbarrett/sites/www.tcbarrett.com/wp-content/plugins/google-sitemap-generator/sitemap-core.php on line 1636
http://wordpress.org/extend/plugins/google-sitemap-generator/
